5秒后页面跳转
捷配首页

Datasheet > 逻辑 > 计数器> SNJ54ALS191AJ
SNJ54ALS191AJ PDF预览

SNJ54ALS191AJ

更新时间： 2024-11-25 11:07:59
品牌 Logo 应用领域
德州仪器 - TI 计数器
页数 文件大小 规格书
8页 135K
描述
同步 4 位加/减二进制计数器 | J | 16 | -55 to 125

阅读下载

中文翻译

获取价格

SNJ54ALS191AJ 数据手册

 浏览型号SNJ54ALS191AJ的Datasheet PDF文件第2页浏览型号SNJ54ALS191AJ的Datasheet PDF文件第3页浏览型号SNJ54ALS191AJ的Datasheet PDF文件第4页浏览型号SNJ54ALS191AJ的Datasheet PDF文件第5页浏览型号SNJ54ALS191AJ的Datasheet PDF文件第6页浏览型号SNJ54ALS191AJ的Datasheet PDF文件第7页 
SN54ALS191A, SN74ALS191A  
SYNCHRONOUS 4-BIT UP/DOWN BINARY COUNTERS  
SDAS210C – DECEMBER 1982 – REVISED JULY 1996  
SN54ALS191A . . . J PACKAGE  
SN74ALS191A . . . D OR N PACKAGE  
Single Down/Up Count-Control Line  
Look-Ahead Circuitry Enhances Speed of  
Cascaded Counters  
(TOP VIEW)  
Fully Synchronous in Count Modes  
B
V
A
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
CC  
Q
Q
Asynchronously Presettable With Load  
Control  
B
A
CLK  
RCO  
MAX/MIN  
LOAD  
C
CTEN  
D/U  
Package Options Include Plastic  
Small-Outline (D) Packages, Ceramic Chip  
Carriers (FK), and Standard Plastic (N) and  
Ceramic (J) 300-mil DIPs  
Q
C
Q
D
GND  
D
description  
SN54ALS191A . . . FK PACKAGE  
(TOP VIEW)  
The ’ALS191A are synchronous 4-bit reversible  
up/down binary counters. Synchronous counting  
operation is provided by having all flip-flops  
clocked simultaneously so that the outputs  
change coincidentally with each other when  
instructed by the steering logic. This mode of  
operation eliminates the output counting spikes  
3
2
1
20 19  
18  
CLK  
Q
4
5
6
7
8
A
RCO  
CTEN  
NC  
17  
16  
15  
14  
NC  
normally  
associated  
with  
asynchronous  
MAX/MIN  
LOAD  
D/U  
(ripple-clock) counters.  
Q
C
The outputs of the four flip-flops are triggered on  
a low-to-high-level transition of the clock (CLK)  
input if the count enable (CTEN) input is low. A  
high at CTEN inhibits counting. The direction of  
the count is determined by the level of the  
down/up (D/U) input. When D/Uislow, thecounter  
counts up, and when D/U is high, the counter  
counts down.  
9 10 11 12 13  
NC – No internal connection  
These counters feature a fully independent clock circuit. Changes at the control inputs (CTEN and D/U) that  
modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of  
the counter is dictated solely by the conditions meeting the stable setup and hold times.  
These counters are fully programmable. Each output can be preset to either level by placing a low on the LOAD  
input and entering the desired data at the data inputs. The output changes to agree with the data inputs  
independently of the level of the clock input. This feature allows the counters to be used as modulo-N dividers  
by simply modifying the count length with the preset inputs.  
CLK, D/U, and LOAD are buffered to lower the drive requirement, which significantly reduces the loading on  
(current required by) clock drivers, for long parallel words.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 1996, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
12345678

中文翻译

下载PDF

SNJ54ALS191AJ 替代型号

型号 品牌 替代类型 描述 数据表
5962-8684001EA TI

完全替代

 同步 4 位加/减二进制计数器 | J | 16 | -55 to 125
SNJ54ALS191J TI

功能相似

 Synchronous 4-Bit Up/Down Binary Counters 16-CDIP -55 to 125

与SNJ54ALS191AJ相关器件

型号 品牌 获取价格 描述 数据表
SNJ54ALS191AW TI

获取价格

 		同步 4 位加/减二进制计数器 | W | 16 | -55 to 125
SNJ54ALS191FK TI

获取价格

 		Synchronous 4-Bit Up/Down Binary Counters 20-LCCC -55 to 125
SNJ54ALS191FKR TI

获取价格

 		ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CQCC20, CERAMI
SNJ54ALS191J TI

获取价格

 		Synchronous 4-Bit Up/Down Binary Counters 16-CDIP -55 to 125
SNJ54ALS192J ROCHESTER

获取价格

 		Decade Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TT
SNJ54ALS193AJ TI

获取价格

 		具有双时钟的同步 4 位加/减二进制计数器 | J | 16 | -55 to 125
SNJ54ALS193AW TI

获取价格

 		具有双时钟的同步 4 位加/减二进制计数器 | W | 16 | -55 to 125
SNJ54ALS20AFK TI

获取价格

 		DUAL 4-INPUT POSITIVE-NAND GATES
SNJ54ALS20AJ TI

获取价格

 		DUAL 4-INPUT POSITIVE-NAND GATES
SNJ54ALS20AW TI

获取价格

 		DUAL 4-INPUT POSITIVE-NAND GATES

与SNJ54ALS191AJ相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证